70971148ed1fadb17a1de707b03b0b61bcf9d523c540b9bf4e411b5bb0dda5f0

Analysis

max time kernel
1800s
max time network
1167s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 18:35

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General

Target

Covid20.exe
Size

4.8MB
MD5

fde53eb92140afb22152cfa283ef26cc
SHA1

b975f240e69307f809e54fabf6ea547183edf130
SHA256

56c6b80e9f525e9010b47112f8085751e8e3fb744e111df3330b481df6a7e954
SHA512

df5eaa0e429e618d7c94eab0dd6021d774abe50ad2d200d3608d1d1c50b70e65eccff564baa2fd2b86a5dad999ff7edb04152ac5cbff209fae7d93c329dff771
SSDEEP

98304:i1EB4Av3kOW561R4+8QxEmKDxUmEhc0R2lIP9W0uJPg4dWzN/ODIw9AtVje7gQ:EEi4z1R4+LKDPEK0RBFduJ44dWpiHAtM

Score

7^/10

aspackv2 ransomware upx

Malware Config

Signatures

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral6/files/0x0007000000023213-22.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	Covid20.exe

Executes dropped EXE 2 IoCs

pid	Process
2300	CLWCP.exe
1508	flasher.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral6/memory/1560-0-0x0000000000400000-0x0000000001A7B000-memory.dmp	upx
behavioral6/memory/1560-34-0x0000000000400000-0x0000000001A7B000-memory.dmp	upx

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\Desktop\Wallpaper = "c:\\covid20\\bg.bmp"	CLWCP.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3964	WScript.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	3156	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 3940	1560	Covid20.exe	91
PID 1560 wrote to memory of 3940	1560	Covid20.exe	91
PID 1560 wrote to memory of 3940	1560	Covid20.exe	91
PID 3940 wrote to memory of 2300	3940	cmd.exe	94
PID 3940 wrote to memory of 2300	3940	cmd.exe	94
PID 3940 wrote to memory of 2300	3940	cmd.exe	94
PID 3940 wrote to memory of 1508	3940	cmd.exe	95
PID 3940 wrote to memory of 1508	3940	cmd.exe	95
PID 3940 wrote to memory of 1508	3940	cmd.exe	95
PID 3940 wrote to memory of 3964	3940	cmd.exe	96
PID 3940 wrote to memory of 3964	3940	cmd.exe	96
PID 3940 wrote to memory of 3964	3940	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\Covid20.exe
"C:\Users\Admin\AppData\Local\Temp\Covid20.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\706D.tmp\covid.bat" "
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3940
- - C:\Users\Admin\AppData\Local\Temp\706D.tmp\CLWCP.exe
    clwcp c:\covid20\bg.bmp
    3⤵
    - Executes dropped EXE
    - Sets desktop wallpaper using registry
    PID:2300
- - C:\Users\Admin\AppData\Local\Temp\706D.tmp\flasher.exe
    flasher 5 c:\covid20\covid.bmp
    3⤵
    - Executes dropped EXE
    PID:1508
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\706D.tmp\corona.vbs"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    PID:3964

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:2624

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact